Structure-property Relations in Well-defined Polydimethylsiloxane Networks

affine and phantom affine network model amount of A4 approximately average molecular weight B₂ benzene C. W. Macosko calculated catalyst concentration correlation function crosslinks determined difunctional DLS experiment dry network dynamic light scattering dynamic mechanical elastic chains elastic modulus equilibrium swelling excluded volume Flory-Erman model Flory-Rehner fraction of polymer g/mol Gennes given light scattering Macosko-Miller model Macromolecules methanol mixtures of B2 Mn,el model networks modulus mol/m³ mole monofunctional monomers networks swollen number average molecular number of elastic obtained Oseen tensor P. J. Flory P(FOUT PDMS pendant chains pendant material phantom network model polydimethylsiloxane polymer chains polymerization polystyrene precursors predicted prepare the networks pure B2 networks reaction reported in Table sample scaling exponent semi-dilute solutions series of networks silane sol fractions solvent stoichiometry swelling behavior swelling results swollen in toluene swollen networks swollen polymer networks tetrafunctional titration toluene trapped entanglements v₂ vinyl groups volume fraction weight fraction Wsol